Here's my tribute to Assassin's Creed:
Hmm, some sort of temple.
Oh look, a golden alter.
Curious, it appears to be a button. I wonder what will happen if I push it...
My lord, a secret passageway?! The Templars must be up to something!!
You do not want to see the redstone circuitry for this!
I designed the damn thing and I barely understand how it works. The tricky part was designing it so that the top stair segment was pushed up after the floor was pulled away, but it also needed to be pulled down before the floor was pushed back in. I don't understand how I got that to work, all I know is that I managed it somehow and I'm praying to Notch that it keeps on working.